Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
horse-head is a noun meaning "any of several silvery marine fishes with very flat bodies". It carries one recorded sense.
any of several silvery marine fishes with very flat bodies
Definitions, synonyms and semantic relations for horse-head come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.